The Flash and Arrow Heroes Get into a Massive Superhero Fight Club in New Promo

The CW has released an adorable promo for the final episodes of Arrow and The Flash, in which Arrow initiates little Barry Allen into a superhero fight club. "In this club, there's only one rule. There are no rules!"

The best part of this promo is that it's not for any episode in particular, it's just for funsies. Although I'm sure it doesn't hurt that there's an Arrow/Flash crossover episode coming up: the eighteenth episode of The Flash, "All-Star Team-Up," which airs tomorrow night at 8pm ET on The CW.